SP9079

SAFETY FUNCTIONS AT POWER-UP NOT EXECUTED

Fanuc · αi Series Servo Amplifier

What does SP9079 mean?

The safety functions designed to run during power-up for the spindle were not executed. This indicates a critical issue during the spindle system's initialization sequence related to safety, which could prevent safe operation.

Repair Steps

  1. 1

    Replace the SPM control printed-circuit board.

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Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier
Fanuc Error SP9079: SAFETY FUNCTIONS AT POWER-UP NOT EXECUTED — Troubleshooting Guide | ErrorLib